121312321332 has 12 divisors (see below), whose sum is σ = 283062083136. Its totient is φ = 40437440440.

The previous prime is 121312321321. The next prime is 121312321337. The reversal of 121312321332 is 233123213121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121312321337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5054680044 + ... + 5054680067.

It is an arithmetic number, because the mean of its divisors is an integer number (23588506928).

Almost surely, 2^121312321332 is an apocalyptic number.

121312321332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121312321332 is an abundant number, since it is smaller than the sum of its proper divisors (161749761804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121312321332 is a wasteful number, since it uses less digits than its factorization.

121312321332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10109360118 (or 10109360116 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

Adding to 121312321332 its reverse (233123213121), we get a palindrome (354435534453).

The spelling of 121312321332 in words is "one hundred twenty-one billion, three hundred twelve million, three hundred twenty-one thousand, three hundred thirty-two".